1 It is ridiculous to dispute about such things．
A foolish B shocking
C frightening D amusing
2 It was obvious that she was not going home．
A evident B necessary
C possible D probable
3 He replied that this was absolutely impossible．
A stated B answered
C said D claimed
4 He confesses that he has done it．
A agrees B alleges
C admits D answers
5 He lacked the strength to deal with all these problems．
A thinkof B talk about
C copy down D cope with
6 He purchased a ticket and went up on the top deck．
A bought B took
C showed D made
7 Foreign money can be converted into the local currency at this bank．
A written B changed
C moved D reported
8 He looks like a crazy mail．
A lazy B patient
C mad D happy
9 We cannot permit such conduct．
A movement B words
C principle D behavior
10 She started to clean the kitchen．
A stopped B began
C continued D kept
11 John talked over the new job offer with his wife．
A discussed B mentioned
C accepted D rejected
12 I rarely wear a raincoat because I spend most of my time in a car．
A normally B continuously
C seldom D usually
13 We explored the possibility of closer trade links at the conference.
A rejected B investigated
C proposed D postponed
14 He often finds fault with my work．
A criticizes B praises
C evaluates D talks about
15 They agreed to settle the dispute by peaceful means
A complete B determine
C untie D solve
Earthquakes and Animals
Scientists who try to predict earthquakes have gotten some new helpers recently-animals．Animals often seem to know in advance that an eaghquake is coming．and they show their fear by acting in strange ways．Before a quake(地震)in China in l975 snakes awoke from their winter sleep early only to freeze to death in the cold air．All the unusuaI behavior,as well as physical changes in earth，alerted(提醒)Chinese scientists to the coming quake．They moved people away from the danger zone and saved thousands of lives．
One task for scientists today is to learn exactly which types of animal behavior predict quakes．It is not an easy job．First of all not every animal reacts to the danger of an earthquake．Jusf before a Califomia quake in l979，for example，an Arabian horse became very nervous and tried to break out of his stall．The horse next to him，however, remained perlectly calm．It is also difficult sometimes to tell the difierence between normal animal calmness and"earthquake nerves．"A zookeeper once told earthquake researchers that his cougar(美洲狮)had been acting strangely．It turned out that the cougar had a stomachache．
A second task for scientists is to find out exactly what kinds of warning the animals receive．They know that animals sense far more of the world than humans do．Many animals can see，hear，and smell things that people do not even notice．Some can detect tiny changes in air pressure．gravity,or the magnetism(磁力)of earth．This extra sense probably helps animals predict earthquakes．
A good example of this occurred with a group of dogs．They were closed in an area that was being shaken by a series of tiny earthquakes．Before each quake a low booming sound was heard．Each sound caused the dogs to bark(吠)wildly．The dogs began to bark during a silent period! A scientist who was recording the quakes looked at his machine．He realized that the dogs had reacted to a booming noise．They also sensed the tiny quake that followed it．The machine recorded both．though humans felt and heard nothing．
In this case there was a machine to check what the dogs were sensing．Many times，however, our machines record nothing out of the or dinary,even though animals know a quake is coming．The animals might be sensing something we do measure but do not recognize as a warning．Discovering what animals sense，and learning how they know danger signals，is a job for future scientists．
16 During an earthquake in China in 1975，some cows had"earthquake nerves"and some remained calm．
A Right B Wrong C Not mentioned
17 Chinese scientists moved people away from the coming quake zone after noticing the strange behavior of some animals and physical changes in earth．
A Right B Wrong C Not mentioned
18 Animals of the same kind always react in the same way to the danger of a quake
A Right B Wrong C Not mentioned
19 The cougar behaved strangely because it had sensed the threat of a quake．
A Right B Wrong C Not mentioned
20 All animals can sense the very small changes in air pressure，gravity,or the magnetism of earth．
A Right B Wrong C Not mentioned
21 The dogs mentioned in the passage sensed both the low booming sounds and the minor quakes following them．
A Right B Wrong C Not mentioned
22 A task for future scientists is to find out how an animal receives a warning signal.
A Right B Wrong C Not mentioned
1．Did you know that before 1950，hurricanes had no names?They were simply given numbers．The first names were simply Alpha，Bravo，Charlie，etc．But in 1953，female names were given because of the unpredictability(不可预知)factor of the storms．In 1979，realizing the sexist(性别歧视的)nature of such names，the lists were expanded to include both men and women．
2．Hurricanes and typhoons(台风)are the same things．If they form in the Atlantic，we call these strong storms hurricanes，from the West Indian word hurricane，meaning"big wind．"And if they are Pacific storms，they are called typhoons from the Chinese taifun，meaning"great wind．"To be classified as a hurricane，the storm must have maximum winds of at least 75 mph.These storms are big，many hundreds of miles in diameter．
3．Hurricanes get their power from water vapor as it gwes out its stored'up energy．All water vapor gives out heat as it condenses(凝结)from a gaseous state to a liquid state over fixed points on the equator(赤道)．To make a hurricane，you must have extremely wet，warm all the kind of air that can only be found in tropical regions．
4． Scientists have determined that the heat given out in the process of water condensation can be as high as 95 billion kilowatts per hour．In just one day alone，the storm can produce more energy than many industrialized nations need in an entire year!The problem is that we don't know how to make such great energy work for us．
5．Predicting the path of a hurricane is one of the most difficult tasks for forecasters．It moves at a typical speed of l5 mph．But not always．Some storms may race along at twice this speed， then suddenly stop and remain in the same location in the ocean for several days．It can be maddening(发疯的)if you live in a coastal area that may be hit．
6．The biggest advance in early detection is continuous watch from weather satellites．With these，we can see the storms form and track them fully,from birth to death．While they can still
kill people and destroy property,hurricanes will never surprise any natron again.
23 Paragraph 1
24 Paragraph 2
25 Paragraph 3
26 Paragraph 4
A A Short History of Naming Hurricanes
B Harnessing the Hurricane Energy
C Diffculty in Forecasting the Course of a Hurricane
D Huge Energy Stored in a Hurricane
E Forecasting a Hurricane Through Satellite Watching
F Diffeerent Names for the Same Things
27 Both male and female names are used for hurricanes in consideration of .
28 Using weather satellites can ensure of hurricanes.
29 Energy specialists may be interested in of hurricanes.
30 Scientists cannot accurately predict the course of a hurricane due to .
A the timely(及时的)discovery
C sex equality
D its connection with humans
E the huge power
F its uncertainty
第一篇 Mobile Phones
Mobile phones should carry a label if they proved to be a dangerous source of Fadiation．according to Robert Bell，a scientist．And no more mobile phone transmitter towers(发射塔)
should be built until the long．term health effects of the electromagnetic radiation they emit(放射)is scientifically evaluated．he said．"Nobody's going to drop dead overnight but we should be asking for more scientitic information．"Robert Bell said at a conference on the health effecfs of low-1evel radiation．"If mobile phones are found to be dangerous．they should carry a warning label until proper shields can be devised．"he said．
A report widely circulated(传播)among the public says that up to now scientists do not really know enough to guarantee there are no ill effects on humans from electromagnetic radiation．According to Robert Bell，there are 3.3 million mobile phones in Australia alone and they are increasing by 2，000 a day．By the year 2000 it is estimated that Australia will have 8
million mobile phones：nearly one for every two people．
As well，there are 2，000 transmitter towers around Australia，many in high density(密度) residential areas．For example,Telstra，Optus and Vodaphone build their towers where it is geographically suitable to them and disregard the need of the community．The electromagnetic radiation emitted from these towers may have already produced some harmful effccts on the health of the residents nearby．
Robert Bell suggests that until more research is completed the Govemment should ban construction of phone towers from within a 500 meter radius (半径)of school grounds，child care
centers，hospitals，sports playing fields and residential areas with a high percentage of children．He says there is emerging evidence that children absorb low．1evel radiation at a rate more than three times that of adults．He adds that there is also evidence that if cancer sufierers are subjected to electromagnetic waves the growth rate of the disease accelerates(提高)．
Robert Bell calls on the major telephone companies to fund adequate research and urges(敦促)the Government to set up a wide ranging inquiry into possible health effects．
31 According to Robert Bell，if mobile phones prove to be dangerous to people's health，
A they should be banned immediately．
B the use of them should be restricted．
C all transmitter towers should be torn down．
D a warning label should be attached．
32 How many mobile phone users will there be in Australia by the year 2000，according to the passage?
A 3.3 million．
B Almost half of the population．
C One third of the population．
D One fourth of the population．
33 Many transmitter towers were built
A on high mountains．
B in places suitable to the phone users.
C in areas which can take in radiation．
D in densely populated areas．
34 Who absorb low-1evel radiation at a higher rate than the others?
D Old people．
35 This article mainly argues that
A the Goverdnment should restrict the number of mobile phone users.
B mobile phones may have ill effects on people.
C mobile phones have proved to be harmless to people's health.
D no more phone towers should be constructed.
第二篇 A Thirsty World
The world is not only hungry，it is also thirsty for water．This may seem strange to you，since nearly 75％of the earth's surface is covered with water．But about 97％of this huge amount is sea-water，or salt water．Man can only drink and use the other 3％-the flesh water that comes from rivers，lakes，underground，and other sources． And we cannot even use all of that，because some of it is in the form of icebergs(冰山)and glaciers(冰川)．Even worse，some of it has been polluted．
At the moment，this small amount of fresh water is still enough for us．However,our need for water is increasing rapidly．Only if we take steps to deal with this problem now can we avoid a severe worldwide water shortage later on．A limited water supply would have a bad effect on agriculture and industry．
In addition to stopping wasting our precious water,one useful step we should take is to develop ways of reusing it．Experiments have already been done in this field，but only on a small scale.
Today,in most large cities，water is used only once and it eventually returns to the sea or runs into underground storage tanks．But it is possible to pipe water that has been used to a purifying(净化)plant．There it can be filtered(过滤)and treated with chemicals so that it can be used againjust as if it were flesh from a spring．
But even if every large city purified and reused its water,we still would not have enough.Where could we turn next?To the oceans!A11 we'd have to do to make use of the vast amount of
sea-water is-remove the salt．This salt-removing process is already m use in many parts of the world．
So if we take all these steps，we'll be in no danger of drying up !
36 The phrase''the world"in the first line of the passage refers to
37 What percentage of the earth's water can man actually use at present?
A Nearly 75 percent．
B About 97 percent．
C Exactly 3 percent．
D Less than 3 percent．
38 According to the passage，we can avoid a worldwide water shortage in the furore by
A increasing rainfall．
B reusing water and utilizing sea-water．
C cutting down our consumption of water．
D reducing the number of factories producing steel．
39 Which of the following statements，according to the passage，is NOT true?
A A limited water supply will affect industrial production．
B Every large city purifies and reuses its water．
C Purified water is not exactly as flesh as spring water．
D Oceans are the largest water source．
40 According to the passage，sea-water can be tureed into flesh water by
A heating it up．
B treating it with chemicals．
C taking salt out of it．
D drying it up．
第三篇 Computers in Cars
You're far from home on a lonely road.Shadowy forests stretch away on both sides.Athick mist(雾)makes it difficult to see far beyond your car's windshield (挡风玻璃).
"Can this be route 90A?"you wonder.If it is ,you should be near a town.Yet there's no hint of one. Night is closing in.And you're low on gasoline.
This is a situation where an in -car computer that can navigate would be a big help.
A car computer that navigates?Yes!Such computers exist . Several experimental models are being tested by General Motors,Ford,Chrysler,and several foreign car makers.These computers vary in detail. But they all contain series of maps on videodiscs or videotapes.For example,one computer system contains 13,300 maps covering the continental US.
Before starting out on a trip,a driver can type in the code for the region he or she plans to drive through.The computer then shows a map of theat region.At the same time,a tiny radio receiver linked to the computer goes to work. It picks up signals from navigation satellites such as the NAVSTAR network.Using these signals,the computer shows the car's position at all times and displays this position on the map.The computer can dalso calculate and display the best route to follow.
A navigation computer may also receive and use data about road construction, weather conditions,and traffic jams.This information would be displayed to the driver and the computer would also use the information to work out alternate(交替的)routes.
Most cars nowadays also contain computers that help cars run more efficiently. Microprocessors(微处理机)control certain engine functions by regulating the mixing of fuel.Data on car speed,oil pressure,revolutions per minute,enginete mperature , and fuel level can be displayed as digital data (numbers) or warning lights.
Some auto designers suggest that a central computer display be used to clearly present such timely information as car speed and fuel level.Warning lights would indicate a drop in oil pressure or a sudden rise in engine temperature.To get more information on these conditions,the driver could call it up on the computer display screen.When needed,the computer could be "asked"to provide navigation aid or information about the car's condition.
41 By describing a typical situation of a lost driver on the road,the arthor intends to
A make us believe how complex the highway computer network is.
B let us know how in-car computers are linked to road signs.
C show us how helpful a navigation computer can be.
D tell us that NAVSTAR has come into use.
42 The word "navigate"in Paragraph 3 meadns
A "help one comtrol the traffic".
B "help one find one's way".
C "give a ship correct information about its course".
D "direct a plande to its destination."
43 The dnavigation computers have one thing in common:they all
A contain series of maps on videodisce or videotapes.
B contain 13,300 maps covering the continentalUS.
C can be obtained free of charge.
D cost a lot of money.
44 Without signals from navigation satellites,the in-car computer
A would still be able to locate the car's position at all times.
B would fail to locate the car's position.
C could still work out the best route to follow.
D would seek help from the radio receiver linked to it .
45 Of the following functions,which is NOT possessed by the navigation computer?
A Showing a map of the region a driver plans to drive through.
B Predicting a car crash on the road.
C Getting information about road construction,weather conditions,and traffic jams.
D Showing the car's position at all times and displaying it on the map.
All children in the United States have to receive an education，but the law does not say they have．to be educated at schoo1．A number of parents prefer not to send their children to schoo1． (46)There are about 300，000 home-schoolers in the United States today．Some parents prefer teaching their children at home because they do not believe that public schools teach the correct religious values；others believe they call provide a better educational experience fortheir children by teaching them at home． (47)
David Guterson and his wife teach their three children at home．Guterson says that his children leam very differently from children in schoo1． (48)For example，when there is heavy snowfall on a winter day,it may start a discussion or reading about climate，snow removal(去除)equipment，Alaska，polai bears(北极熊)，and winter tourism．A spring evening when the family is out watching the stars is a good time to ask questions about satellites and the space program (49)
Home schooling is often more interesting than regular schools，but critics say that home-schoolers are outsiders who might be uncomfortable mixing with other people in adult life． (50)However,most parents don't have the time or the desire to teach their children at home，so schools will continue to be where most children get their formal education.
A Interestingly,results show that home-schooled children quite often do better than average on national tests in reading and math.
B Critics also say that most parents are not well qualified to teach their children．
C Learning starts with the children's interests and questions.
D Children who are educated at home are known as"home．schoolers．"
E In some countries，however,children are educated by their parents.
F If the Brazilian rain forests are on the TV news．it could be a perfect time to talk about how rain forests influence the climate，and how deserts are formed．
The Development of Rubber
Here is the story of rubber.From the earliest time it was common knowledge (51) the Peruvians that when a cut was made in the outside skin of a rubber tree , a white dliquid (52) milk came out ,and that (53) this a sticky(粘的)mass of rubber might be made .This rubber is soft when warm,so that it is possible to give it any (54).The Peruvians made the (55) that it was very good for keeping out the wet. Then in the early 1800's ,the Americans made use of it for the first time .First they made overshoes to (56) their feet dry.Then came a certain Mr.Mackintosh,who made coats of cloth covered with natural rubber.From that day to this we have been coating cloth with rubber as Mr. Mackintosh (57),and our raincoats are still named after him.
But these first rubber overshoes and raincoats were all soft and sticky in summer,and (58)and inelastic(无弹性的)in the winter when it was cold.But the rubber we have today is soft and elastic(有弹性的), (59)very strong-even in the warmest summer and the coldest winter.This was made (60)by a man called Goodyear.After many (61),he found that nitric acid(销酸)made the rubber much better,but it is not hard and strong enough.Then a strange thing took (62).A friend of his ,Nicholas Hayward,had the idea in his sleep that rubber might be made hard and strong if mixed with sulphur(硫磺)and put in the sun.Goodyear put this idea (63)the test,and saw that it did have more or less the desired effect- though somewhat less than more. The only effect it had was on the outside of the drubber.It is common knowledge now that the (64)to make rubber hard and strong is by heating dit with sulphur.It took Goodyear four more years to find this method.When at last he did it,he had (65)at all .Everything of the smallest value had been used to get money,even his sons'school-books.
51 A for B to C about D with
52A like B alike C resembled D similar
53A on B from C up D in
54 A use B heat C pressure D from
55 A creation B invention C discovery D recognition
56 A retain B keep C hold D set
57 A did B built C tried D conducted
58 A weak B gentle C hard D strong
59 A or B however C though D even
60 A capable B probable C practical D possible
61 A experiments B checks C discoveries D works
62 A form B place C shape D size
63 A on B to C in D with
64 A system B style C way D direction
65 A everything B anything C nothing D something